024
FNCA52 TJSJ 070729
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
329 AM AST WED JAN 7 2026
DISCUSSION
THE FIRE DANGER IS EXPECTED TO CONTINUE LOW TODAY AS THE AREA
REMAINS UNDER THE INFLUENCE OF A REMNANTS OF FRONTAL PASSAGE.
HOWEVER, DRIER AIR WILL MOVE INTO THE AREA LATER TODAY AND THE
RELATIVE HUMIDITY IS EXPECTED TO DROP TO THE LOW AND MID-40S BY
LATE THIS MORNING. NORTHEAST WINDS SHOULD RANGE BETWEEN 10 AND 15
MPH IN GENERAL.
PRZ014-080730-
SOUTHEAST COASTAL PLAINS-
329 AM AST WED JAN 7 2026
TODAY TONIGHT THU
CLOUD COVER MCLEAR CLEAR MCLEAR
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 30 0 20
TEMP (24H TREND) 87 (+3) 66 (-2) 87
RH % (24H TREND) 44 (-21) 92 (+4) 44
WIND 20FT/EARLY(MPH) E 10 NE 9 E 12
WIND 20FT/LATE(MPH) E 10 NE 9 E 12
MIXING HGT(FT-AGL/MSL)5890 4960
TRANSPORT WND (MPH) NE 8 E 7
VENT RATE (KT-FT) 41230 29760
DISPERSION 5 5
DSI 5 2 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ015-080730-
SOUTHERN HILLS-
329 AM AST WED JAN 7 2026
TODAY TONIGHT THU
CLOUD COVER MCLEAR CLEAR PCLDY
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 40 0 40
TEMP (24H TREND) 83 (+5) 63 (-3) 83
RH % (24H TREND) 57 (-16) 97 (+5) 59
WIND 20FT/EARLY(MPH) E 10 NE 9 E 9
WIND 20FT/LATE(MPH) E 10 NE 9 E 9
MIXING HGT(FT-AGL/MSL)5770 5950
TRANSPORT WND (MPH) NE 7 E 6
VENT RATE (KT-FT) 34620 29750
DISPERSION 5 5
DSI 5 2 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ016-080730-
NORTH COASTAL PLAINS-
329 AM AST WED JAN 7 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 30 10
TEMP (24H TREND) 84 (+2) 66 (-3) 85
RH % (24H TREND) 62 (-10) 100 (+5) 63
WIND 20FT/EARLY(MPH) NE 13 E 12 NE 12
WIND 20FT/LATE(MPH) NE 13 E 12 NE 12
MIXING HGT(FT-AGL/MSL)4620 4830
TRANSPORT WND (MPH) NE 10 E 9
VENT RATE (KT-FT) 41580 38640
DISPERSION 5 5
DSI 5 3 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ017-080730-
NORTHERN HILLS-
329 AM AST WED JAN 7 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 30 20
TEMP (24H TREND) 83 (+3) 64 (-2) 84
RH % (24H TREND) 62 (-11) 99 (+2) 60
WIND 20FT/EARLY(MPH) NE 12 E 10 NE 10
WIND 20FT/LATE(MPH) NE 12 E 10 NE 10
MIXING HGT(FT-AGL/MSL)5290 5860
TRANSPORT WND (MPH) NE 10 E 8
VENT RATE (KT-FT) 47610 41020
DISPERSION 5 5
DSI 5 3 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ018-080730-
WEST COAST-
329 AM AST WED JAN 7 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 20 40
TEMP (24H TREND) 86 (+2) 65 (-2) 86
RH % (24H TREND) 56 (-13) 98 (+4) 57
WIND 20FT/EARLY(MPH) SE 14 E 14 SE 14
WIND 20FT/LATE(MPH) SE 14 E 14 SE 14
MIXING HGT(FT-AGL/MSL)4760 4780
TRANSPORT WND (MPH) E 8 E 6
VENT RATE (KT-FT) 33320 23900
DISPERSION 5 5
DSI 5 3 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ019-080730-
EASTERN INTERIOR-
329 AM AST WED JAN 7 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 10 10
TEMP (24H TREND) 83 (+3) 64 (-3) 83
RH % (24H TREND) 63 (-11) 100 (+4) 65
WIND 20FT/EARLY(MPH) NE 9 NE 8 E 9
WIND 20FT/LATE(MPH) NE 9 NE 8 E 9
MIXING HGT(FT-AGL/MSL)5160 6240
TRANSPORT WND (MPH) NE 9 E 7
VENT RATE (KT-FT) 41280 37440
DISPERSION 5 5
DSI 5 1 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ022-080730-
LUQUILLO MOUNTAIN RANGE-
329 AM AST WED JAN 7 2026
TODAY TONIGHT THU
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 10 30
TEMP (24H TREND) 78 (+2) 63 (-3) 79
RH % (24H TREND) 69 (-9) 100 (+2) 72
WIND 20FT/EARLY(MPH) NE 6 NE 5 E 6
WIND 20FT/LATE(MPH) NE 6 NE 5 E 6
MIXING HGT(FT-AGL/MSL)4370 4790
TRANSPORT WND (MPH) NE 9 E 6
VENT RATE (KT-FT) 34960 23950
DISPERSION 5 5
DSI 5 1 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ023-080730-
CENTRAL MOUNTAIN RANGE-
329 AM AST WED JAN 7 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 10 50
TEMP (24H TREND) 81 (+4) 61 (-3) 82
RH % (24H TREND) 60 (-15) 99 (+2) 59
WIND 20FT/EARLY(MPH) NE 12 E 9 E 8
WIND 20FT/LATE(MPH) NE 12 E 9 E 8
MIXING HGT(FT-AGL/MSL)6270 6990
TRANSPORT WND (MPH) NE 8 E 6
VENT RATE (KT-FT) 43890 34950
DISPERSION 5 5
DSI 5 2 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ024-080730-
CAYEY MOUNTAIN RANGE-
329 AM AST WED JAN 7 2026
TODAY TONIGHT THU
CLOUD COVER MCLEAR CLEAR MCLEAR
PRECIP TYPE SHOWERS NONE SHOWERS
CHANCE PRECIP (%) 30 0 20
TEMP (24H TREND) 79 (+3) 63 (-2) 79
RH % (24H TREND) 66 (-11) 100 (+3) 70
WIND 20FT/EARLY(MPH) NE 9 NE 6 E 8
WIND 20FT/LATE(MPH) NE 9 NE 6 E 8
MIXING HGT(FT-AGL/MSL)5470 5520
TRANSPORT WND (MPH) NE 8 E 7
VENT RATE (KT-FT) 38290 33120
DISPERSION 5 5
DSI 5 2 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ025-080730-
VIEQUES-
329 AM AST WED JAN 7 2026
TODAY TONIGHT THU
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 10 30
TEMP (24H TREND) 85 (0) 70 (-2) 85
RH % (24H TREND) 58 (-4) 96 (+5) 61
WIND 20FT/EARLY(MPH) NE 9 NE 10 E 8
WIND 20FT/LATE(MPH) NE 9 NE 10 E 8
MIXING HGT(FT-AGL/MSL)3420 3310
TRANSPORT WND (MPH) NE 10 NE 9
VENT RATE (KT-FT) 30780 26480
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ026-080730-
CULEBRA-
329 AM AST WED JAN 7 2026
TODAY TONIGHT THU
CLOUD COVER MCLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 10 40
TEMP (24H TREND) 85 (0) 72 (-2) 85
RH % (24H TREND) 60 (-3) 94 (+7) 62
WIND 20FT/EARLY(MPH) NE 9 NE 10 E 8
WIND 20FT/LATE(MPH) NE 9 NE 10 E 8
MIXING HGT(FT-AGL/MSL)3410 3350
TRANSPORT WND (MPH) NE 9 E 9
VENT RATE (KT-FT) 27280 26800
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ027-080730-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
329 AM AST WED JAN 7 2026
TODAY TONIGHT THU
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 20 40
TEMP (24H TREND) 88 (+3) 66 (-2) 88
RH % (24H TREND) 41 (-23) 95 (+7) 43
WIND 20FT/EARLY(MPH) SE 12 NE 14 G17 SE 11
WIND 20FT/LATE(MPH) SE 12 NE 14 G17 SE 11
MIXING HGT(FT-AGL/MSL)4760 4880
TRANSPORT WND (MPH) E 6 E 7
VENT RATE (KT-FT) 23800 29280
DISPERSION 5 5
DSI 5 2 5
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ001-080730-
SAINT THOMAS AND SAINT JOHN-
329 AM AST WED JAN 7 2026
TODAY TONIGHT THU
CLOUD COVER CLEAR MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 10 30
TEMP (24H TREND) 85 (+1) 71 (-3) 85
RH % (24H TREND) 59 (-6) 98 (+10) 61
WIND 20FT/EARLY(MPH) NE 9 E 10 E 6
WIND 20FT/LATE(MPH) NE 9 E 10 E 6
MIXING HGT(FT-AGL/MSL)3380 3250
TRANSPORT WND (MPH) NE 9 E 9
VENT RATE (KT-FT) 27040 26000
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ002-080730-
ST CROIX-
329 AM AST WED JAN 7 2026
TODAY TONIGHT THU
CLOUD COVER PCLDY PCLDY MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 30 30
TEMP (24H TREND) 86 (+1) 71 (-2) 86
RH % (24H TREND) 60 (-5) 96 (+6) 62
WIND 20FT/EARLY(MPH) NE 8 E 9 E 6
WIND 20FT/LATE(MPH) NE 8 E 9 E 6
MIXING HGT(FT-AGL/MSL)4280 4240
TRANSPORT WND (MPH) NE 9 E 7
VENT RATE (KT-FT) 34240 25440
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
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